Digital-to-analoginen convert: tsananguro, anodawo misimboti, kushanda.

Analog anonongedzera vari dzinoratidzwa nhamba unyanzvi parameters, rimwe riri pamusoro oscillation maitikiro. Somuenzaniso, vanhu nzeve anogona kunzwa anonongedzera ane kakawanda iri zvinobva 1 kusvika 22 kHz, uye chiedza anooneka unotora munhu kakawanda akayera mune mabhiriyoni Hertz. Muenzaniso mumwe analogue chiratidzo rinogona pakunyora gramophone chinyorwa. Photos, dema uye chena pakutanga, uye zvino, uye ruvara - zvakare muenzaniso ane analoginen chiratidzo yakarekodwa.

Digital-to-analoginen convert ndiyo inenge nguva zvakakodzera pashure pamusoro analoginen-kuti-digitaalinen convert (ADC), izvo zvinobatsira kutaura mashoko mashoma, kuti paiva nedambudziko pachena kuti kugadziriswa mudziyo pasi kukurukurwa nesu.

ADC anomuchinja kuti analoginen chiratidzo kune digitaalinen. Kazhinji nhamba izvo rinoenderana chiratidzo ukoshi panguva yakayerwa, muri binary romutemo. Mumwe kuyerwa rinoitwa neumwe kakawanda, yainzi zvakabudiswa unodiwa.

shoma zvakabudiswa mwero iri hunonzi isimbiswe kuti anopa undistorted chiratidzo kupora. chiratidzo ichi haana kusarurama uye adzorere goho ari digitaalinen kuti analoginen chiratidzo convert. quantizing maitikiro anofanira zviviri kunonyanyisa maitikiro anotendeuka chiratidzo. Somuenzaniso, nokuti Kushandurwa undistorted inzwi chiratidzo zvakakwana quantization maitikiro akaenzana 44 kHz.

Zvino zviri pachena kuti digitaalinen-kuti-analoginen convert riri mazano kutevedzana kwezviitiko binary Codes, izvo zviri vatendeuke kupinda runoenzanirana analoginen chiratidzo.

Operational Kuvimbika uye upenyu basa zvinosanganisirwawo nenhamba, asi parameters izvi regai kuvimba uchishandisa pfungwa iri DAC, asi kubva zvinoriumba uye kuvaka unhu. Zvisinei tishandurwe musimboti DACs vari kusiyaniswa maitiro dzakadai simba-siyana, kutendeuka zvakarurama uye nguva parameters.

The simba Range akatsunga kuti DAC kwezvavakaisa goho, sezvo nhamba kufadza kukosha mazano (goho) kune shoma chiyamuro (goho) ukoshi.

Imwe nguva yakakodzera parameters ndiyo Ivan Kuchin yacho zvakabudiswa kakawanda, inonzi quantization. Zvinonzwisiswa kuti kukosha ichi kutaura kuti ADC, vachishandisa iyo chiratidzo rave vatendeukira DAC.

The chikuru kwazvo zvinoratidza nokukurumidza of DAC ndiyo nguva kutendeuka. Pano tinofanira kusarudza pakati kuwedzera kutendeuka - DACs neyakarurama, asi isingasviki kwayo kumhanya, uye vakutarisire.

Funga zvimwe zvinotaurwa rokutendeutsa "digitaalinen-kuti-analoginen", pasina kupa Masvomhu uye zvirongwa. Pane vaviri kutendeuka musimboti - Serial uye zvakafanana.

The kutevedzana kwezviitiko digitaalinen Codes pa mazano digitaalinen-kuti-analoginen convert Anochinja kutevedzana kwezviitiko rectangular pulses panguva goho. A kupomba upamhi uye penguva hunotevedzana nayo pamberi chinotevera kupomba akatsunga zvichienderana kuuya binary remitemo. Nokudaro, goho shoma-vanopfuura Sefa iri akatiwanira analoginen chiratidzo kuburikidza pulses kusvika imwe mazano ane shanduka nguva.

Parallel kutendeuka rinoitwa Somuenzaniso, vachishandisa resistors chokuita mune newokuti mudanga simba zvitengeswa. Kuwanda resistors akaenzana zvishoma mazano kune mazano remitemo. The kurwisa kukosha rinonyatsooneka digit ndiyo 2 nguva shoma pane muzvirevo LSB. In nerimwe kurwisa redunhu ane kiyi. Access yekubvuma anodzora kiyi - apo 1, iyezvino Rwako. Somugumisiro, mudunhu ano achazviisa nokurema zvinoyerera, uye digitaalinen-kuti-analoginen convert goho ane mambure kuitika iro dzinoenderana binary romutemo rakanyorwa.